TY - CHAP
T1 - Tunable Input-Quasi-Reflectionless Multiplexers
AU - Gómez-García, Roberto
AU - Muñoz-Ferreras, José María
AU - Psychogiou, DImitra
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/10/5
Y1 - 2018/10/5
N2 - A class of frequency-tunable planar multiplexer with quasi-reflectionless behavior at its input port for modern RF wireless-communications transceivers is presented. To attain the input quasi-absorptive characteristic in a Kth-order N-channel realization, an additional Kth-order N-band multi-stopband channel terminated in a reference-impedance resistor is added. Each Kth-order stopband in this N-band bandstop channel exhibits a nearly-complementary frequency profile with regard to the one of a counterpart bandpass channel. Thus, the input-signal energy not transmitted by the bandpass channels in their stopband regions is dissipated in the resistor of the nearly-complementary multi-band bandstop branch. The theoretical operational principles and coupling-matrix-based design equations for the first-order input-quasi-reflectionless multiplexer stage are detailed. Furthermore, for experimental-validation purposes, a first-order microstrip duplexer prototype that can be tuned in the 0.85-1.15-GHz range is manufactured and characterized.
AB - A class of frequency-tunable planar multiplexer with quasi-reflectionless behavior at its input port for modern RF wireless-communications transceivers is presented. To attain the input quasi-absorptive characteristic in a Kth-order N-channel realization, an additional Kth-order N-band multi-stopband channel terminated in a reference-impedance resistor is added. Each Kth-order stopband in this N-band bandstop channel exhibits a nearly-complementary frequency profile with regard to the one of a counterpart bandpass channel. Thus, the input-signal energy not transmitted by the bandpass channels in their stopband regions is dissipated in the resistor of the nearly-complementary multi-band bandstop branch. The theoretical operational principles and coupling-matrix-based design equations for the first-order input-quasi-reflectionless multiplexer stage are detailed. Furthermore, for experimental-validation purposes, a first-order microstrip duplexer prototype that can be tuned in the 0.85-1.15-GHz range is manufactured and characterized.
UR - https://www.scopus.com/pages/publications/85056392401
U2 - 10.1109/IMWS-5G.2018.8484353
DO - 10.1109/IMWS-5G.2018.8484353
M3 - Chapter
AN - SCOPUS:85056392401
T3 - 2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies, IMWS-5G 2018
BT - 2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies, IMWS-5G 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies, IMWS-5G 2018
Y2 - 30 August 2018 through 31 August 2018
ER -